The Tenor Framework is a set of utilities to improve development of web projects, although it can be used on desktop projects. The main goal is to simplify mapping relational tables to entities, in a simple and maintainable way.

FFEntityFramework is an Object-Relational Mapping Framework (O-R Mapping / Object Persistence) for .NET with built-in features like Xml-Serialization, Model-View-Controller-Framework or UndoManagement ...
All these Components use the same Meta-Base which can be definied via Attributes (Annotations) on your Business-Classes. Nevertheless differences between Xml- and Db-Serialization can be made via an enum MetaUsage (Database, Xml, Internal …). For Example you can define a Key-Column which is only used for Db-Serialization and excluded for Xml-Serialization. The same can be done with References, Delegations &c.
A special Feature is that all Metadata can be read from a comfortable Object-Model (MetaLayer) for your own needs.

Lettuce allows Java programmers writing direct SQL queries in Java codes. It defines SQL keywords in Java classes, and it also introduces a way easily combining these keywords to create a versatile query in Java.

pdoMap is a robust PHP ORM mapper with many OOP features. The mapping structure, requests, and transactions are defined in XML files. The core directly generates PHP classes for high performance. It is very easy to use and configure.

Bedrock is a web framework designed around bridging popular APIs and technologies with PHP. While it has an MVC core with all the functionality expected from a web framework, it's primary goal is to simplify the use of other technologies with PHP.